JP6378524B2 - Image capturing apparatus, image capturing apparatus control method, and program - Google Patents

Description

  The present invention relates to a photographing apparatus, a photographing apparatus control method, and a program.

  In recent years, FPD (Flat Panel Detector) that irradiates a subject with radiation, detects the transmitted radiation, converts it into electrical energy, and acquires radiation image information has been widely used in the medical field. A cassette type FPD for portability has a built-in memory and battery for recording image information and patient information, and a wireless type is widely used. As the memory, a volatile memory is used because the writing speed of image information is fast and the number of rewrites has no upper limit. However, if the remaining battery level becomes zero or the battery is removed, the power supply to the volatile memory is cut off and the image information is lost, and it is necessary to irradiate the patient with unnecessary radiation again. Arise.

  On the other hand, in Patent Document 1, when the control unit that monitors the remaining battery level determines that the remaining battery level is low, whether or not to transmit the data in the volatile memory to the non-volatile memory is determined. It is disclosed to determine.

JP 2006-250727 A

  However, when communication between the image capturing apparatus and the external device is poor, it may happen that the operator restarts the image capturing apparatus with a doubt. In the technique described in Patent Document 1, untransferred image information stored in the imaging apparatus is lost due to restart at the time of poor communication, and it is necessary to take an image again, and the patient is irradiated with originally unnecessary radiation. It will be.

  In view of the above problems, an object of the present invention is to reduce the frequency of re-imaging by suppressing the disappearance of image information and to suppress unnecessary radiation irradiation to a subject.

The photographing apparatus according to the present invention that achieves the above object is as follows.
A radiographic imaging device,
A communication means for communicating with an external device;
Detecting means for detecting a communication state with the external device;
Determining means for determining the communication state;
Control means for moving the image data stored in the volatile memory to the non-volatile memory when the determination means determines that the communication state is poor;
Equipped with a,
Wherein, after the image data stored in the volatile memory is moved to the non-volatile memory, it characterized that you allow the following photographing.

  According to the present invention, it is possible to suppress the disappearance of image information, reduce the frequency of re-photographing, and suppress unnecessary radiation irradiation to the subject.

The figure which shows the structural example of the radiography system which concerns on one Embodiment of this invention. 1 is an external view of a photographing apparatus according to an embodiment of the present invention. 1 is an internal configuration diagram of a photographing apparatus according to an embodiment of the present invention. Explanatory drawing of the content of the process which concerns on one Embodiment of this invention. Explanatory drawing of the content of the process which concerns on one Embodiment of this invention. 1 is an internal configuration diagram of a control circuit and a power supply control circuit according to an embodiment of the present invention. The figure which shows the process sequence of each part which concerns on one Embodiment of this invention. 3 is a flowchart showing a procedure of processing performed by the photographing apparatus according to the first embodiment of the present invention. Explanatory drawing of the processing content which concerns on one Embodiment of this invention. Explanatory drawing of the processing content which concerns on one Embodiment of this invention. 9 is a flowchart showing a procedure of processing performed by an imaging apparatus according to a second embodiment of the present invention. 9 is a flowchart showing a procedure of processing performed by an imaging apparatus according to a third embodiment of the present invention. 10 is a flowchart showing a procedure of processing performed by an imaging apparatus according to a fourth embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
<1. Overall configuration of radiation imaging system>
FIG. 1 is a diagram illustrating a configuration example of a radiation imaging system according to an embodiment of the present invention. The radiation imaging system includes an in-hospital LAN 100 that is a network extending in a hospital, an imaging apparatus 101, an electronic computer 102, an access point 103, a HUB 104, an X-ray interface box 105, and a radiation generation apparatus 106.

  The imaging apparatus 101 detects radiation that has been applied to the subject 107 from the radiation generation device 106 and has passed through the subject 107, and generates a radiation image. The electronic computer 102 is used for displaying a radiographic image captured by the imaging apparatus 101 on a display unit or instructing an imaging state. The access point 103 is used for communication with the photographing apparatus 101.

  The HUB 104 connects the electronic computer 102, the access point 103, and the X-ray interface box 105. The X-ray interface box 105 includes a circuit that mediates communication, monitors the states of the imaging apparatus 101 and the radiation generation apparatus 106, and controls radiation irradiation and imaging. The radiation generator 106 holds an X-ray tube and a rotor that accelerate electrons at a high voltage to generate radiation and collide with the anode.

<2. Configuration of photographing apparatus>
Next, with reference to FIG. 2 and FIG. 3, a configuration example of the photographing apparatus 101 according to an embodiment of the present invention will be described. FIG. 2 shows an example of the appearance of the photographing apparatus 101, and FIG. 3 shows an example of the internal configuration of the photographing apparatus 101. In this embodiment, the photographing apparatus 101 will be described. However, the present invention can realize the control unit excluding the sensor in the photographing apparatus 101 as one apparatus.

  As shown in FIG. 2, the photographing apparatus 101 is, for example, a portable cassette type flat panel disc (FPD). The photographing apparatus 101 includes a power button 108, a battery 109, and a connector connection unit 110. The power button 108 for controlling the power on / off of the main body is provided on the side surface when the radiation incident side is the front surface (left figure). An attachment portion 126 for attaching the battery 109 is provided on the back surface (right figure). The inner side surface of the attachment portion 126 has a terminal for connecting to the battery 109 and a lock mechanism for fixing the battery 109.

  The main body of the battery 109 is charged by a battery-dedicated charger (not shown). The battery 109 can be attached by inserting a convex portion of the battery 109 into a terminal portion for connecting the battery 109 and the photographing apparatus 101. In addition, power can be supplied from the external power source 112 through the sensor cable 111 connected to the connector connecting portion 110 of the photographing apparatus 101.

  The connection between the connector connecting portion 110 and the sensor cable 111 is realized by providing a suction plate on the connector connecting portion 110 and providing a magnet on the sensor cable 111 side. Further, the sensor cable 111 and the electronic computer 102 may be connected by wire.

  Next, as shown in FIG. 3, the photographing apparatus 101 includes a control circuit 201, a power supply control circuit 202, a drive IC (Integrated Circuit) 203, an amplifier IC 204, and an ADC (Analog-to-Digital Circuit) 205. The communication unit 206 and the memory unit 207 are provided. The memory unit 207 includes a volatile memory 2071 and a nonvolatile memory 2072.

  First, a phosphor (not shown) electrically stores radiation irradiated from the radiation generator 106 by converting light into electrical energy by a photoelectric conversion element. Next, a line is selected by the drive IC 203, and a thin transistor (TFT; Thin Film Transistor) having a switching function made of amorphous silicon or the like on a glass substrate is sequentially turned on, and one horizontal line is all turned on. Then, the accumulated charge is output via the signal line connected to each pixel circuit. This is sequentially read out by the amplifier IC 204. The read analog data is converted into digital data using the ADC 205. The control circuit 201 temporarily stores the digital data output from the ADC 205 in the volatile memory 2071 of the memory unit 207.

  The communication unit 206 communicates with the electronic computer 102 and the X-ray interface box 105 wirelessly. The communication with the X-ray interface box 105 and the computer 102 may be wired connection via the connector connection unit 110 and the sensor cable 111. The power supply control circuit 3 is connected to the battery 109 and the external power supply 112, and controls power supply from each of them, supplies power to each unit, and monitors the remaining battery level.

  FIG. 4A is an explanatory diagram of processing according to an embodiment of the present invention (processing when information in the volatile memory is moved to the nonvolatile memory when the communication state is bad).

  4A, the radiation image data 401 obtained by the radiation sensor of the imaging apparatus 101 is once stored in a volatile memory 2071 inside the imaging apparatus 101 by a storage control unit (not shown), and the image data 401 is stored in the electronic computer 102. Display and subsequent processing are executed. The reason why the volatile memory 2071 is temporarily stored in the volatile memory 2071 instead of the non-volatile memory 2072 inside the photographing apparatus 101 is that the operation speed of the volatile memory 2071 is higher than that of the non-volatile memory 2072. This is because the speed is high. In addition, the nonvolatile memory 2072 has an upper limit on the number of rewrites, and this is also because a limit is imposed on the number of operations for repeatedly capturing and storing. In this regard, when a communication state failure occurs during the transfer of the image data 401 from the imaging apparatus 101, the image data 401 stored in the volatile memory 2071 in the imaging apparatus 101 is also stored in the nonvolatile memory in the imaging apparatus 101. By transferring to 2072, loss of the image data 401 is prevented.

  FIG. 4B is an explanatory diagram of processing according to an embodiment of the present invention (processing for performing control to disable power supply when image information transfer processing to an external device is incomplete).

  In FIG. 4B, while the image capturing apparatus 101 is transferring image data 401 to the electronic computer 102 (while transfer is incomplete), control is performed so that the power of the image capturing apparatus 101 is not shut off. That is, when transfer is incomplete, or when there is an image for which transfer has not been completed, power-off is prohibited until transfer is completed or there are no more untransferred images. The power control unit of the power control circuit 202 turns off the power by controlling the power supply not to transmit a power supply cutoff signal to the photographing apparatus 101 even when the power button 108 is pressed. The loss of the image data 401 due to the interruption of the power supply is reduced. The power-off is not limited to turning off the power of the entire photographing apparatus, but may be a control for stopping the power supply to the volatile memory.

  By performing both the processes of FIG. 4A and FIG. 4B, it is possible to further reduce the risk of loss of the image data 401.

<3. Internal configuration and processing sequence of control circuit and power supply control circuit>
Next, with reference to FIG. 5A and FIG. 5B, the internal configuration of the control circuit 201 and the power supply control circuit 202 according to an embodiment of the present invention and the processing sequence of each unit having the configuration of FIG. 5A will be described. The control circuit 201 includes a control unit 2010, a determination unit 2011, a count unit 2012, and a communication state detection unit 2013. The power supply control circuit 202 includes a power supply 2021 and a power supply control unit 2022. The electronic computer 102 receives image data from the volatile memory 2071 via the communication unit 206 (F501 to F503).

  The communication state detection unit 2013 detects information such as a communication state and a transfer state of image data (F504 to F509). The communication state detection unit 2013 transmits communication information such as communication strength and communication speed, the number of retransmission requests sent from the electronic computer 102 when image data is being transferred but has not been transferred to the electronic computer 102, It detects whether or not the transfer of image data has been completed and whether or not communication is currently being performed.

  The determination unit 2011 compares the communication strength and communication speed detected by the communication state detection unit 2013 with a predetermined value, and determines that the communication state is bad when the communication value is equal to or less than the predetermined value (F510 to F511). The control unit 2010 accesses the memory unit 207 and performs a process of transferring the image data 401 stored in the volatile memory 2071 to the nonvolatile memory 2072 (F515 to F516).

  When a retransmission request is sent from the computer 102 via the communication unit 206, the communication state detection unit 2013 detects the retransmission request. When the communication state detection unit 2013 detects a retransmission request, the count unit 2012 counts the number of retransmission requests (F512). The determination unit 2011 compares the number of retransmission requests with a predetermined number of times, and determines that the communication state is bad when the number is greater than or equal to the predetermined number. When the determination unit 2011 determines that the communication state is bad, the determination unit 2011 outputs a determination result to the control unit 2010 (F513 to F514). The control unit 2010 accesses the memory unit 207 and performs processing to transfer the image data 401 stored in the volatile memory 2071 to the nonvolatile memory 2072 (F517 to F518).

  When the communication unit 206 is transferring image data 401 to the electronic computer 102, that is, when currently communicating, the communication state detecting unit 2013 detects that communication is currently being performed, and in that case, power control is performed. The unit 2022 performs control so that the power supply 2021 cannot be shut off (F519 to F521).

  When the transfer of the image data 401 to the computer 102 is completed, the communication state detection unit 2013 detects the transfer completion via the communication unit 206 and sets a transmission completion flag (not shown).

  When the transmitted flag is set, the power control unit 2022 permits the power supply 2021 to shut off the power, but when the transmitted flag is not set (F522), all the image data 401 has not been transferred. In order to protect the image data 401, the power control unit 2022 does not transmit a power supply cutoff signal to the photographing apparatus 101 to the power source 2021 even when the power button 108 is pressed (F523). This makes it impossible to turn off the power supply 2021 and reduces the possibility of the image data 401 being lost due to the interruption of the power supply.

<4. Processing procedure performed by photographing apparatus 101>
With reference to the flowchart of FIG. 6, the process procedure which the imaging device 101 which concerns on 1st Embodiment of this invention implements is demonstrated.

  In step S <b> 601, the control unit 2010 starts transferring image data 401 captured by the imaging apparatus 101 and temporarily stored in the volatile memory 2071 to the electronic computer 102.

  In step S <b> 602, the power supply control unit 2022 determines whether all the image data 401 in the volatile memory 2071 has been transferred to the electronic computer 102 based on whether the transmitted flag is set. If it is determined that there is untransferred image data 401 (S602; Yes), the process proceeds to S603. On the other hand, when it is determined that there is no untransferred image data 401 (S602; No), the process proceeds to S606.

  In step S <b> 603, the power supply control unit 2022 turns off the power supply 2021 by not transmitting a power supply cutoff signal to the photographing apparatus 101 to the power supply 2021 even if the power button 108 is pressed. Ban.

  In step S <b> 604, the determination unit 2011 determines whether the communication state is defective based on the result detected by the communication state detection unit 2013. When it is determined that the communication state is good (S604; Yes), the process returns to S602, and the power supply control unit 2022 stores the image data 401 in the volatile memory 2071 based on whether or not the transmitted flag is set. It is determined whether or not all the data has been transferred to the electronic computer 102. On the other hand, when it is determined that the communication state is bad (S604; No), the process proceeds to S605.

  In step S <b> 605, the control unit 2010 transfers the image data 401 from the volatile memory 2071 to the nonvolatile memory 2072.

  Thereafter, in step S606, the power control unit 2022 permits the power source 2021 to shut off the power.

  By performing the above processing, it is impossible to shut off the power when there is untransferred image data in the volatile memory 2071, and it is difficult to transfer to the electronic computer 102 when the communication state is bad. Therefore, the risk of losing the image data 401 can be reduced by transferring it to the nonvolatile memory 2072. In addition, since it is problematic in use that the state in which the power supply cannot be cut off continues, when the transfer to the electronic computer 102 or the nonvolatile memory 2072 is completed, the power supply can be cut off.

  Here, with reference to FIG. 7A, the processing content of S602 is shown in detail. In step S <b> 602, when the communication state detection unit 2013 detects that the communication unit 206 is not currently communicating, or when the transmission flag is set, the power control unit 2022 shuts off the power to the power source 2021. The process proceeds to S606 in which permission is granted.

  Similarly, with reference to FIG. 7B, the processing content of S604 is shown in detail. In the communication state determination process in S604, the determination unit 2011 compares the communication intensity and the communication speed detected by the communication state detection unit 2013 with predetermined values, so that the communication intensity falls below the predetermined value, or the communication It is determined whether the speed is less than a predetermined value or by comparing the number of retransmission requests counted by the count unit 2012 with a predetermined number to determine whether the number of retransmission requests exceeds a predetermined number. If any one of the above applies, it is determined that the communication state is bad.

  In the embodiment described above, for example, when the remaining amount of the battery 109 is low, the power is shut off after a while if the battery 109 is used as it is, and the image data 401 stored in the volatile memory 2071 is stored. Disappears. In order to avoid such a situation, the control circuit 201 acquires information of the power control circuit 202 that monitors the remaining battery level, and the remaining battery level is equal to or less than a predetermined value (for example, 5% or less of the total capacity). In such a case, the control unit 2010 may transfer the image data 401 in the volatile memory 2071 to the nonvolatile memory 2072.

(Second Embodiment)
In the second embodiment, in addition to the processing of the first embodiment, an example will be described in which when there is untransferred image data, control is performed so that the next shooting is impossible.

  With reference to the flowchart of FIG. 8, the procedure of the process which the imaging device 101 which concerns on 2nd Embodiment of this invention implements is demonstrated. Since the configuration of the radiation imaging system and the configuration of the imaging apparatus 101 are the same as those in the first embodiment, detailed description of each part is omitted.

  In step S <b> 801, the control unit 2010 starts transferring image data 401 captured by the image capturing apparatus 101 and temporarily stored in the volatile memory 2071 to the electronic computer 102.

  In step S <b> 802, the power supply control unit 2022 determines whether all the image data 401 in the volatile memory 2071 has been transferred to the electronic computer 102 based on whether the transmitted flag is set. When it is determined that there is untransferred image data 401 (S802; Yes), the process proceeds to S803. On the other hand, when it is determined that there is no untransferred image data 401 (S802; No), the process proceeds to S806.

  In step S <b> 803, the power supply control unit 2022 turns off the power supply 2021 by not transmitting a power supply cutoff signal to the photographing apparatus 101 to the power supply 2021 even if the power button 108 is pressed. Ban. Further, the control circuit 201 does not drive the drive IC 203, so that it is impossible to move to the next photographing.

  In step S804, the determination unit 2011 determines whether or not the communication state is bad based on the result detected by the communication state detection unit 2013. When it is determined that the communication state is good (S804; Yes), the process returns to S802, and the power supply control unit 2022 stores the image data 401 in the volatile memory 2071 based on whether or not the transmitted flag is set. It is determined whether or not all the data has been transferred to the electronic computer 102. On the other hand, when it is determined that the communication state is bad (S804; No), the process proceeds to S805.

  In step S <b> 605, the control unit 2010 transfers the image data 401 from the volatile memory 2071 to the nonvolatile memory 2072. Thereafter, in step S606, the power control unit 2022 permits the power source 2021 to shut off the power. In addition, the control circuit 201 can drive the drive IC 203 to move to the next shooting.

  As described above, according to the present embodiment, control is performed so that the power supply cannot be cut off, and in addition to protecting the image data 401 by the nonvolatile memory 2072, control is performed so that the next shooting cannot be performed. . Thereby, while the image data 401 generated by the previous shooting is not transferred, the next shooting is performed and the data is overwritten, and the risk of losing the previous image data can be reduced. It becomes.

(Third embodiment)
In the third embodiment, an example in which image data in a nonvolatile memory is transferred to an external device will be described. With reference to the flowchart of FIG. 9, the procedure of the process which the imaging device 101 which concerns on 3rd Embodiment of this invention implements is demonstrated. Since the configuration of the radiation imaging system and the configuration of the imaging apparatus 101 are the same as those in the first embodiment, detailed description of each part is omitted. Also, the description of the same processing as the content already described in the processing of the flowchart is omitted. Each process of S901-S906 is the same as each process of S801-S806 of FIG. The processing in S907 is the same as the processing in S806.

  In step S <b> 908, the control unit 2010 determines whether to transfer the image data 401 stored in the nonvolatile memory 2072 to the electronic computer 102. Specifically, it is determined to transfer the image data 401 when a transfer instruction is received from the electronic computer 102. The transfer instruction may be performed based on an input from a user who operates the electronic computer 102, or may be performed by providing a transfer instruction button on the photographing apparatus 101 and pressing the transfer instruction button by the user. . If it is determined to transfer the image data 401 (S908; Yes), the process proceeds to S909. On the other hand, when it is determined not to transfer the image data 401 (S908; No), the process proceeds to S910.

  In step S909, the determination unit 2011 determines whether or not the communication state has been recovered to a good state based on the result detected by the communication state detection unit 2013. When it is determined that the communication state has been recovered (S909; Yes), the process proceeds to S911. On the other hand, when it is determined that the communication state has not recovered (S908; No), the process returns to S908.

  In step S910, the control unit 2010 waits for the next instruction. In step S <b> 911, the control unit 2010 transfers the image data 401 in the nonvolatile memory 2072 to the electronic computer 102.

  Thus, each process of the flowchart of FIG. 9 ends. In step S908, if the sensor cable 111 is connected to the connector connection unit 110 to perform wired connection with an external device, the control unit 2010 automatically transfers the image data 401 in the nonvolatile memory 2072 to the computer 102. You may comprise so that it may transfer. Note that the radiation image data may be deleted from the nonvolatile memory when the transfer is completed.

  As described above, in the present embodiment, the image data transferred from the volatile memory to the non-volatile memory due to the poor communication state is transferred to the electronic computer along with the recovery of the communication state. Thereby, the user can acquire image data through the electronic computer, and can display and confirm the image data.

(Fourth embodiment)
In the fourth embodiment, an example will be described in which the communication state is detected before shooting, and shooting is not possible when it is detected that the communication state is poor. With reference to the flowchart of FIG. 10, the procedure of the process which the imaging device 101 which concerns on 4th Embodiment of this invention implements is demonstrated. Since the configuration of the radiation imaging system and the configuration of the imaging apparatus 101 are the same as those in the first embodiment, detailed description of each part is omitted. Also, the description of the same processing as the content already described in the processing of the flowchart is omitted.

  In step S <b> 1001, the control unit 2010 recognizes that the work state has become a preparation for imaging preparation based on the information acquired from the X-ray interface box 105. In step S1002, the determination unit 2011 determines whether the communication state is good. When it is determined that the communication state is good (S1002; Yes), the process proceeds to S1003. On the other hand, when it is determined that the communication state is bad (S1002; No), the process stands by.

  In step S <b> 1003, the control unit 2010 starts photographing by the photographing apparatus 101 by driving the drive IC 203. In step S <b> 1004, the control unit 2010 stores the captured image data 401 in the volatile memory 2071.

  Each process of S1005-S1014 is the same as each process of S901-S909 and S911 of FIG.

  In step S <b> 1015, the determination unit 2011 determines whether to perform the next shooting based on whether a shooting instruction has been received from the user who has operated the electronic computer 102. If it is determined that the next shooting is to be performed (S1015; Yes), the process returns to S1002. On the other hand, if it is determined not to perform the next shooting (S1015; No), the process proceeds to S1016. In step S1016, the control unit 2010 turns off the power of the imaging apparatus 101. Thus, the processes in the flowchart of FIG. 10 are completed.

  As described above, in the present embodiment, the communication state is detected before shooting, and shooting is disabled when it is detected that the communication state is poor. This makes it possible to transfer image data after shooting smoothly and reduce the risk of disappearance. Further, continuous shooting can be performed by determining whether or not to continue shooting.

[Modification]
In the first to fourth embodiments, when there is untransferred image data or the like, it is impossible to turn off the power of the image capturing apparatus 101, and when the communication state is poor, from the spontaneous memory Although the process of transferring information to the non-volatile memory has been described, these processes may be performed individually or together.

  By disabling the power supply, when the transfer of the image data in the volatile memory is incomplete, the power supply to the volatile memory is not impaired, so that the risk of losing the image data can be reduced. In addition, by transferring information from the source memory to the non-volatile memory when the communication status is poor, the image data is lost when the operator determines that the communication failure is a malfunction of the imaging device and restarts. Risk can be reduced. Also, when it is difficult to transfer the image data to the electronic computer due to a poor communication state, if you want to perform the next shooting, transfer the image data to the non-volatile memory, and overwrite the data in the volatile memory. It is also possible to reduce the risk of image data loss.

  When both are performed, it is possible to reduce the loss of the image data at both the stage before transferring the image data from the photographing apparatus to the electronic computer and the stage during the transfer, thereby further protecting the image data. be able to. Therefore, the possibility of re-imaging can be reduced, and irradiation of unnecessary radiation to the patient can be suppressed.

During normal operation, control to turn off the power in accordance with a predetermined instruction (for example, a command generated in response to pressing of a power button provided in the photographing apparatus, a power-off instruction command received from the control apparatus) ( (Power control for stopping the supply of power to the volatile memory), and when there is an untransferred image, the control may not be performed even if a predetermined instruction is given.
(Other embodiments)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

  206 ... Communication unit, 2013 ... Communication state detection unit, 2011 ... Determining unit, 2010 ... Control unit, 2021 ... Power supply, 2022 ... Power supply control unit, 2071 ... Volatile Memory, 2072 ... Non-volatile memory

Claims (12)

A radiographic imaging device,
A communication means for communicating with an external device;
Detecting means for detecting a communication state with the external device;
Determining means for determining the communication state;
Control means for moving the image data stored in the volatile memory to the non-volatile memory when the determination means determines that the communication state is poor;
Equipped with a,
Wherein, after said stored in the volatile memory image data is moved to the non-volatile memory, photographing apparatus characterized that you allow the following photographing. Further comprising power control means for controlling the power of the photographing apparatus,
The power supply control unit prohibits turning off the power supply when transfer of the image data stored in the volatile memory to the external device is incomplete. The imaging device described in 1.   The power control means prohibits turning off the power by controlling not to transmit a power supply cutoff signal even when a power button for controlling on / off of the power is pressed. The imaging device according to claim 2.   4. The photographing apparatus according to claim 1, wherein the detection unit detects at least one of a communication strength and a communication speed with the external device. 5. The detecting device, imaging device according to any one of claims 1 to 4, wherein the detecting a retransmission request for the image data sent from the external device. The detecting device, the external device and the imaging device according to any one of claims 1 to 5, wherein detecting that communication is in progress. The detecting device, imaging device according to any one of claims 1 to 6, wherein detecting that the transfer to the external device of the image data is completed. Said communication means when the communication state is recovered from the failure state to good condition, any claim 1 to 7, wherein the transfer of image data that has been moved into the non-volatile memory to the external device The imaging device according to claim 1. Further comprising power control means for controlling the power of the photographing apparatus,
Said power supply control means, after the image data stored in the volatile memory is moved to the non-volatile memory, any one of claims 1 to 8, characterized in that to allow off of the power supply 1 The imaging device according to item. 2. The control unit according to claim 1, wherein when the determination unit determines that the communication state is poor before shooting, the control unit prohibits shooting until the communication state is determined to be good. The photographing apparatus according to any one of Items 9 to 9 . A method for controlling a radiographic image capturing apparatus, comprising:
A communication step in which the communication means communicates with an external device;
A detecting step for detecting a communication state with the external device;
Judging means, the judging process of judging the communication state,
A control step for moving the image data stored in the volatile memory to the non-volatile memory when the control means determines that the communication state is bad;
I have a,
In the control step, the next photographing is permitted after the image data stored in the volatile memory is moved to the nonvolatile memory . The program for making a computer perform each process of the control method of the imaging device of Claim 11 .

Images